Radiation protection instrumentation - Radon and radon decay product measuring instruments - Part 2: Specific requirements for <sup>222</sup>Rn and <sup>220</sup>Rn measuring instruments— 50 стр.
Measurement of radioactivity in the environment - Air: radon-222 - Part 1: Origins of radon and its short-lived decay products and associated measurement methods (ISO 11665-1:2012)
